Re: [PATCH v2 2/2] virtio: Document DMA coherency

2017-02-07 Thread Rob Herring
On Thu, Feb 02, 2017 at 04:36:21PM +, Robin Murphy wrote: > Since making use of the DMA API will require the architecture code to > have the correct notion of device cache-coherency on architectures like > ARM, explicitly call this out in the virtio-mmio DT binding. The ship > has sailed for

Re: [PATCH v2 2/2] virtio: Document DMA coherency

2017-02-03 Thread Will Deacon
On Thu, Feb 02, 2017 at 04:36:21PM +, Robin Murphy wrote: > Since making use of the DMA API will require the architecture code to > have the correct notion of device cache-coherency on architectures like > ARM, explicitly call this out in the virtio-mmio DT binding. The ship > has sailed for

[PATCH v2 2/2] virtio: Document DMA coherency

2017-02-02 Thread Robin Murphy
Since making use of the DMA API will require the architecture code to have the correct notion of device cache-coherency on architectures like ARM, explicitly call this out in the virtio-mmio DT binding. The ship has sailed for legacy virtio, but let's hope that we can head off any future firmware